Linux Hardening &
Extended Detection
HARDN is a public demonstration of the full HARDN-XDR enterprise solution. It showcases the core security hardening features. Contact SIG for production HARDN-XDR access.
A comprehensive security hardening system for Debian-based Linux, providing automated configuration, continuous monitoring, and built-in security tooling for cloud-based servers, VPS instances, and local host deployments.
Supported Platforms
Debian 12
Bookworm
Debian 13
Trixie
Ubuntu 22.04
Jammy LTS
Ubuntu 24.04
Noble LTS
Deployment Targets
Cloud VPS
AWS, GCP, Azure, DigitalOcean
Bare Metal
Physical servers and workstations
Local Host
Developer and on-prem environments
Capabilities
Automated System Hardening
STIG-compliant security configuration applied in a single command. Works on cloud VPS, bare-metal servers, and local host deployments running Debian or Ubuntu.
Lynis Security Scanner
Built-in Lynis integration for in-depth security auditing. Performs system-wide scanning and generates actionable hardening recommendations.
AIDE File Integrity
Advanced Intrusion Detection Environment monitors the filesystem and detects unauthorized changes to critical system files in real time.
Fail2ban Network Protection
Automated intrusion prevention via Fail2ban. Monitors authentication logs and bans IPs showing malicious or brute-force behavior at the network level.
Interactive Service Manager
Menu-driven CLI for complete system control, run individual hardening modules or all at once, execute security tools, and generate compliance reports.
Compliance Reports & Sandbox
On-demand security reports from the built-in CIS compliance meter. Sandbox mode enables network-isolated testing before applying changes to production.
Ready to harden your infrastructure?
Download HARDN and run your first STIG scan in under five minutes.